At present, the electronically controlled high-pressure fuel injection system mainly includes a single pump, a fuel injector and a common rail. my country's commercial vehicle diesel engines generally use single-pump common rail.
1. Electronically controlled unit pump
The unit pump system is a high pressure fuel injection system with timing control for direct injection diesel engines. They have instantaneous injection pressures of up to 2050 bar, variable injection starting points and can be pre-injected.
2. Electronically controlled high pressure common rail fuel injection system
Electronically controlled common rail fuel injection system is a new concept fuel injection system based on direct injection technology, pre-injection technology and electronic control technology. It is mainly composed of high pressure pump, common rail pipe with pressure sensor and pressure regulating valve, fuel injector with solenoid valve or piezoelectric type, electronic control unit (ECU) and sensor.
